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Xsens MTi-30 AHRS User Manual
Also see for MTi-10 IMU: User manual
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36 Document MT0605P.2018.E© Xsens Technologies B.V. MTi User Manual7.2.2 Alternative 3V3 power supplyIn case there is only a 3V3 power supply available or when there are significant constraints on the powerconsumption, there is the possibility for users of the OEM version to operate the MTi on 3V3.Note that this is only possible on the OEM version and that the power circuit is not protected.Furthermore, there are constraints on the ripple and voltage level itself, see section 7.1 for power supplyrequirements. It is advised to use the standard power supply of 4.5-34V.The hardware of the MTi is designed in such a way that power is automatically drawn from either thestandard VCC (4.5-34V) or the alternative 3V3 power. When there is a voltage applied both to thestandard VCC and the alternative 3V3, the MTi will not start up.Refer to section 7.3 for the pin configuration, including 3V3.7.3 Mechanical and electrical interface specifications7.3.1 Encased MTi connectors overviewThe MTi is available as OEM version and encased version. The encased version has an external 9-pinsconnection for power and data and one SMA connector for the antenna (MTi-G-710 only). The colour ofthe hexagonal nut, together with the colour of the base plate, indicates whether the MTi is an MTi 10-series or MTi 100-series. A grey/silver base plate and nut indicates an MTi 10-series, a dark grey/blackbase plate and nut indicates an MTi 100-series.7.3.1.1 Power and data connectionFor connection with the Fischer receptacle (Fischer part number: DBPU 102 A059-130), Xsens suppliestwo cables. The cable with product code CA-USB-MTi can be used to connect the MTi to any USB port(except for MTi’s with an RS422 interface). The cable with product code CA-MP2-MTi allows access toall 9 pins of the Fischer connector on the MTi.7.3.1.2 Pin configuration casing receptacleCA-USB-MTiConnect the cable to the MTi and the USB cable to any USB port. Under Windows 7, the Xsens USBdriver will be automatically installed if not already installed. In order to lock the CA-USB-MTi to the casing(this will prevent vibration of the push-pull sleeve to be transferred to the casing and MEMS sensors),screw the round nut clockwise. Be sure not to tighten too fast. To unplug the CA-USB-MTi, screw theround locking counter clock wise and pull the connector out of the receptacle by sliding the sleeve of theconnector backwards.Figure 10: Drawing of CA-USB-MTiFischer SV 102 A 059-1302.90m |
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